#!/usr/bin/perl use lib qw(/usr/lib/libDrakX ../perl-install); use standalone; use fsedit; use fs::format; use fs::type; use resize_fat::main; use diskdrake::resize_ntfs; use diskdrake::resize_ext2; use common; use partition_table::empty; use Carp::Heavy; #- help getting the file in make_rescue_img BEGIN { partition_table::raw::default_type() } my ($server); if ($ARGV[0] eq '-s') { (undef, $server, @ARGV) = @ARGV; } my $action = shift @ARGV; sub usage() { die "partimage_whole_disk [-s <server>] (save_all <dir> | rest_all <dirs>)\n" } $ENV{PATH} = "/sbin:/usr/sbin:$ENV{PATH}"; $ENV{HOME} = '/'; log::openLog("/var/log/partimage_whole_disk.log"); my @partimage_cmd = ('partimage', if_($server, '-s', $server)); my $all_hds = fsedit::get_hds({}); if ($action eq 'save_all') { @ARGV == 1 or usage(); save_all($ARGV[0]); } elsif ($action eq 'rest_all') { @ARGV or usage(); rest_all(@ARGV); } else { usage(); } sub save_all { my ($dir) = @_; my $base_dir = $dir; for (my $i = 0; read_part_list($dir); $i++) { #- find a free dir $dir = sprintf("$base_dir.%03d", $i); } my $hd = $all_hds->{hds}[0] or die "no main hard drive\n"; log::l("save_all on $hd->{device}"); my $part_list = [ partition_table::get_normal_parts($hd) ]; foreach (@$part_list) { $_->{saved} = !member($_->{fs_type}, 'ntfs', 'vfat', 'swap'); } #- shrink and don't save the last ext3 partition (which is the /home partition) if (my $part = find { isTrueLocalFS($_) } reverse @$part_list) { $part->{size} = min($part->{size}, 1024 * 1024 * 2); # not greater than 1GB $part->{saved} = 0; } foreach (grep { $_->{saved} } @$part_list) { run_or_die(@partimage_cmd, '-V', 0, '--nombr', '--nodesc', '--nocheck', '-b', '-o', 'save', devices::make($_->{device}), "$dir/$_->{device}"); } save_part_list($dir, $hd->{geom}, $part_list); } sub rest_all { my (@dirs) = @_; my %best; DIRS: foreach (@dirs) { my ($forced_geom, $part_list) = read_part_list($_) or log::l("read_part_list $_ failed"), next; my %h = (dir => $_, forced_geom => $forced_geom, part_list => $part_list); log::l("trying with $h{dir}"); ($h{hd}) = my @used_hds = uniq(map { my $part = $_; find { $part->{device} =~ /^\Q$_->{device}\E./ } fs::get::hds($all_hds) or log::l("can't find hard drive for partition $part->{device}"), next DIRS; } @$part_list); @used_hds >= 1 or log::l("no matching hd"), next; @used_hds <= 1 or log::l("multiple hds: " . join(' ', map { $_->{device} } @used_hds)), next; fs::type::set_fs_type($_, $_->{fs_type}) foreach @$part_list; put_in_hash($_, partition_table::hd2minimal_part($h{hd})) foreach @$part_list; ($h{from_partimage}, my $other) = partition { $_->{saved} } @$part_list; ($h{from_resize}, $h{created}) = partition { member($_->{fs_type}, 'vfat', 'ntfs') } @$other; $h{valid_resize} = every { my $part = fs::get::device2part($_->{device}, [ fs::get::fstab($all_hds) ]) or log::l("partition to resize is missing ($_->{device})"); my $ok = $part && $part->{fs_type} eq $_->{fs_type}; $ok or log::l("partition $_->{device} doesn't have the right filesystem ($part->{fs_type} != $_->{fs_type})"); $ok; } @{$h{from_resize}}; $h{total} = sum(map { $_->{size} } @$part_list); if ($h{total} > $h{hd}{totalsectors}) { log::l("discarding $h{dir} since total $h{total} > $h{hd}{totalsectors}"); } elsif ($h{valid_resize} < $best{valid_resize}) { log::l("discarding $h{dir} since it has invalid resize whereas $best{dir} has valid resize"); } elsif ($h{total} > $best{total}) { log::l("$h{dir} is better than $best{dir} since total $h{total} > $best{total}"); %best = %h; } else { log::l("$h{dir} is not better than $best{dir} since total $h{total} <= $best{total}"); } } $best{dir} or die "no valid partimage data dirs\n"; my %h = %best; log::l("chosen dir $h{dir}"); foreach (@{$h{from_resize}}) { #- resize first my $part = fs::get::device2part($_->{device}, [ fs::get::fstab($all_hds) ]); if (!$part) { log::l("partition to resize is missing ($_->{device})"); $_->{missing} = 1; next; } if ($part->{fs_type} ne $_->{fs_type}) { log::l("partition $_->{device} doesn't have the right filesystem ($part->{fs_type} != $_->{fs_type})"); $_->{missing} = 1; next; } if (@{$h{from_resize}} == 1) { my $half_size = int($h{hd}{totalsectors} / 2) - 2 * $h{hd}->cylinder_size; my $suggested_total = $h{total} - $_->{size} + $half_size; log::l("resizing bigger? (size $_->{size}, half_size $half_size, total $h{total}, suggested_total $suggested_total)"); if ($half_size > $_->{size} && $suggested_total < $h{hd}{totalsectors}) { log::l("prefering to resize $_->{device} to size $half_size instead of $_->{size}"); $_->{size} = $half_size; } } $_->{start} = $part->{start}; if ($_->{size} < $part->{size}) { log::l("resizing $_->{device} to $_->{size} (it is $part->{size})"); my $resize_pkg = $_->{fs_type} eq 'vfat' ? 'resize_fat::main' : 'diskdrake::resize_ntfs'; my $resize = $resize_pkg->new($_->{device}, devices::make($_->{device})); $resize->resize($_->{size}); } else { log::l("no need to resize, instead setting $_->{device}'s size to $part->{size} instead of $_->{size}"); $_->{size} = $part->{size}; } } my $hd = $h{hd}; put_in_hash($hd->{geom}, $h{forced_geom}); log::l("totalsectors $hd->{totalsectors} heads $hd->{geom}{heads} sectors $hd->{geom}{sectors}"); partition_table::raw::compute_nb_cylinders($hd->{geom}, $hd->{totalsectors}); #- grow the last ext3 partition if (my $part = find { isTrueLocalFS($_) } reverse @{$h{part_list}}) { $part->{ratio} = 1; } #- write the partition table partition_table::raw::zero_MBR($hd); foreach my $part (grep { $_->{rootDevice} eq $hd->{device} } @{$h{part_list}}) { next if $part->{missing}; my $hole = find { isEmpty($_) && $_->{size} >= $part->{size} } partition_table::get_normal_parts_and_holes($hd) or die "not enough room for $part->{device}"; $part->{start} = $hole->{start}; log::l("handling $part->{device}"); my $extended = $part->{device} =~ /(\d+)$/ && $1 > 4 && $hd->hasExtended; my %wanted_part = %$part; if ($part->{ratio}) { $part->{size} = $hole->{size}; } else { $part->{size} += $hd->{geom}{sectors} if $extended; $part->{size} += $hd->cylinder_size if $part->{start} == 1; } log::l("adding $part->{device} with size $part->{size}"); partition_table::add($hd, $part, $extended && 'Extended'); foreach ('device', if_(!$part->{ratio}, 'size')) { $part->{$_} eq $wanted_part{$_} or log::l("bad $_ for $part->{device}: $part->{$_} != $wanted_part{$_}"); } } partition_table::write($hd); #- restore from partimage foreach (@{$h{from_partimage}}) { run_or_die(@partimage_cmd, 'restore', '-b', devices::make($_->{device}), "$h{dir}/$_->{device}"); if ($_->{ratio}) { my $resize = diskdrake::resize_ext2->new($_->{device}, devices::make($_->{device})); $resize->resize($_->{size}); } } foreach (@{$h{created}}) { fs::format::part_raw($_, undef); } run_program::run('guessmounts'); if (my @missing = grep { $_->{missing} } @{$h{part_list}}) { my $missing = join('|', map { quotemeta($_->{device}) } @missing); log::l("drop missing devices from fstab and lilo.conf: $missing"); $::prefix = '/mnt'; substInFile { $_ = '' if m!^/dev/($missing)\s! } "$::prefix/etc/fstab"; my $match; substInFile { /^\S/ and $match = m!^other=/dev/($missing)$!; $_ = '' if $match; } "$::prefix/etc/lilo.conf"; } run_program::run('install_bootloader'); } sub lst_fields() { qw(device size fs_type saved) } sub save_part_list { my ($dir, $geom, $part_list) = @_; my @l = map { join(' ', @$_{lst_fields()}) } @$part_list; log::l("save_part_list $dir: $_") foreach @l; my $partimage = join(' ', @partimage_cmd); open(my $F, "| $partimage -z0 -Bfoo=bar -o save_file $dir/lst"); print $F join("/", $geom->{heads}, $geom->{sectors}), "\n"; print $F "$_\n" foreach @l; } sub read_part_list { my ($dir) = @_; my $partimage = join(' ', @partimage_cmd); open(my $F, "$partimage -z0 -Bfoo=bar rest_file $dir/lst |"); my $geom_string = <$F> or return; my %geom; @geom{'heads', 'sectors'} = split('/', chomp_($geom_string)); my @l = chomp_(cat__($F)); log::l("read_part_list $dir: $_") foreach @l; \%geom, [ map { my %l; @l{lst_fields()} = split; \%l } @l ]; } sub run_or_die { my (@l) = @_; run_program::raw({ timeout => 4 * 60 * 60 }, @l) or die join(' ', @l) . " failed\n"; }